DOCSLIB.ORG

General Chemistry Laboratory I Manual

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
General Chemistry Laboratory I Manual GENERAL CHEMISTRY LABORATORY I MANUAL Fall Semester Contents Laboratory Equipments .............................................................................................................................. i Experiment 1 Measurements and Density .............................................................................................. 10 Experiment 2 The Stoichiometry of a Reaction ..................................................................................... 31 Experiment 3 Titration of Acids and Bases ............................................................................................ 10 Experiment 4 Oxidation – Reduction Titration ..................................................................................... 49 Experiment 5 Quantitative Analysis Based on Gas Properties ............................................................ 57 Experiment 6 Thermochemistry: The Heat of Reaction ....................................................................... 67 Experiment 7 Group I: The Soluble Group ........................................................................................... 79 Experiment 8 Gravimetric Analysis ........................................................................................................ 84 Scores of the General Chemistry Laboratory I Experiments ............................................................... 93 LABORATORY EQUIPMENTS BEAKER (BEHER) Beakers are containers which can be used for carrying out reactions, heating solutions, and for water baths. They are for containing and transferring liquids, not for measurements. ERLENMAYER FLASK (ERLEN) Erlenmayer flasks are conical shaped flasks, which are made of Pyrex, are safe for heating solutions, recrystallizations and chemical storage. Because of its conical shape they are best for using with equipments with stopcocks such as separatory funnels and burettes. They are also, like beakers, for containing and transferring liquids not for making measurements. GRADUATED CYLINDER (MEZÜR) Graduated cylinders are used for measuring the volumes of liquids from a few milliliters to many liters. It is important to choose the graduated cylinder according to the amount of liquid to be measured for more accurate measurements. Always read meniscus point for graduated cylinders, pipettes, volumetric flasks and burettes. i What is Meniscus Point and how to read it? Meniscus point occurs when liquid molecules 24 mL not 25 mL adheres themselves onto the walls of the glassware. This phenomenon is known as adhesion. Always read the value right at the bottom of the meniscus VOLUMETRIC FLASK (BALONJOJE) Volumetric flasks are used for measuring very precise and accurate amount of a liquid and is used for such when the amount is too much for pipette or burette. They are also used for solution preparation. PIPETTE (PİPET) Pipette is a glass tube used for the delivery of a measured quantity of liquids. There are two kind of pipettes: a) Graduated (Measuring) Pipette: has many graduated marks, much like a graduated cylinder that can deliver moderately accurate volumes (left picture) b) Volumetric (Transfer) Pipette: a kind with a bulbous middle section that has a single mark for the quantitative delivery of a single volume of liquid each time (middle and right picture) SUCTION DEVICE (PUAR) A suction device or rubber bulb is a device to place on top of pipettes for generation of vacuum to transfer known volume of liquid, usually from one container to another. ii Use of a suction device with a pipette: Before using the suction device deflate the air inside by pressing button A. Then connect the suction device on to a pipette. Press the button S for suction. Measure desired amount of liquid with pipette by taking meniscus point into account. While emptying use button E PASTEUR PIPETTE (PASTÖR PİPETİ) Pasteur pipette (or medicine dropper) is a plastic or glass pipette used to transfer small amounts of liquids, but are not graduated or calibrated for any particular volume. STAND (STAND) A metal rod attached to a heavy metal base. The heavy base keeps the stand stable, and the vertical metal rod allows for easy height adjustment of the iron ring/clamp. BURETTE (BÜRET) Burette is a vertical cylindircal piece of laboratory glassware with a volumetric graduation on its full length and a stopcock on the bottom. It is used to dispense known amounts of a liquid reagent in a titration experiment. iii BURETTE CLAMP (BÜRET KISKACI) Burette clamp is used to fix the burette onto the stand. RING SUPPORT (HALKA) An iron ring/clamp that holds glassware such as a funnels and separatory funnels, and it can be attached to an iron stand. FUNNEL (HUNİ) Funnels are used for pouring liquids from one container to another. In addition, with the aid of filterr paper, they can be used as separation devices to separate liquids from solids. It is fixed by a ring support on a stand. FILTER PAPER (SÜZGEÇ KAĞIDI) Filter paper is used to separate solid particles from liquids. They can have different size with different pore size. Solids that remain on filter paper can later be dried on a watch glass or in an oven. iv WATCH GLASS (SAAT CAMI) Watch glass is used to allow crystals to dry after they have been filtered. They can be used as an evaporating surface or to cover a beaker that can be heated to very high temperatures. SEPARATORY FUNNEL (AYIRMA HUNİSİ) Separatory funnel is used in liquid-liquid extractions to separate the components of a mixture between two immiscible solvent phases of different densities. It is fixed on a stand by a ring support. OVEN (ETÜV) An oven is an enclosed chamber in which heat is produced to dry chemicals or laboratory equipments. EVAPORATING DISH (BUHARLAŞTIRMA KROZESİ) The evaporating dishes are made of porcelain or ceramic material to heat and evaporate solutions to dryness. v ROUND-BOTTOM FLASK (BALON) Round bottom flasks are used for heating or boiling of a liquid, in distillation procedures and to carry out chemical reactions. Their two or three-necked versions are also available and usually more suitable for carrying out reactions. TEST TUBE (TEST TÜP) Test tubes are used as containers for solids and liquids to perform quick tests for properties such as solubility, effect of heat, etc. They can also be used as centrifuge tubes when a separation of solid and liquid is necessary. TEST TUBE RACK (TÜPLÜK) The test tube racks provide places to hold the test tubes vertical so that chemicals are not spilled out. TEST TUBE BRUSH (TÜP YIKAMA FIRÇASI) Test tube brush is a long and narrow equipment to clean the inside of glassware particularly test tubes. THERMOMETER (TERMOMETRE) A thermometer is a device used to measure temperatures or temperature changes. vi SPATULA – SPATÜL Spatula or spoons are hand tools used to weigh solids in balance. BALANCE (HASSAS TERAZİ) A balance is a scale for weighing; to obtain mass of various objects. STIRRING ROD (BAGET) A stirring rod is made of solid glass and used to stir liquids in flasks or beakers. MAGNETIC BAR (MANYETİK BAR) Magnetic bars employ rotating magnetic field to mix a chemical mixture or a reaction continuously once they are placed in. For a magnetic bar to work a stirrer must be placed below or a heater with a stirrer feature. HEATER (ISITICI) A heater is a device that heats water or other solutions to a desired temperature. They usually have a stirrer feature to use with magnetic bars while carrying out a reaction. vii BUNSEN BURNER (BEK ALEVİ) Bunsen burner is a used for heating when no flammable material is present. The burner can be regulated by changing the air and gas mixture. WASH BOTTLE (PİSET) Washbottles usually contains distilled water or acetone and makes for a convenient method to wash out lab glasswares. STOPPER (TIPA) Stoppers are used to close flasks and test tubes to protect from the environment. FUME HOODS (ÇEKER OCAK) The fume hoods protect laboratory workers from fumes and potentially dangerous chemicals reactions by continuously vacuuming air out of the lab and providing a glass shield. viii DISPOSAL OF CHEMICALS and CLEANING-UP THE GLASSWARE If material solid, use solid waste. If it is liquid, determine whether the substance is organic or inorganic then use the related waste. Use acetone to dissolve organic material. For both organic and inorganic materials, they require distilled water to be cleaned up properly. Use brushes to clean glassware if necessary. ix Experiment 1: Measurement and Density 1Measurements and Density INTRODUCTION EVALUATION OF EXPERIMENTAL DATA One of the most generally accepted axioms in chemistry is that, despite all of the advances in theory during that past fifty years, chemistry is still an experimental science. The vast majority of chemical publications today are experimentally based with advances being made continually that further our already vast reservoir of information and knowledge. The chemist-scientist of today and the future, therefore, needs to have a thorough grounding in experimental techniques, in how to acquire data and, in how to evaluate the data collected. Only with knowledge of how to evaluate collected data can any significance be placed on experimental measurements. Accuracy and precision are two essential concepts in the evaluation of data. ACCURACY The agreement of experimental measurements with the accepted value of a quantity is measured in terms of the error. Error is the difference between the value of a quantity as measured and the accepted value of the same quantity. When the error in a measurement is
Load more

Recommended publications
  • Standard Operating Procedures
    Standard Operating Procedures 1 Standard Operating Procedures OVERVIEW In the following laboratory exercises you will be introduced to some of the glassware and tech- niques used by chemists to isolate components from natural or synthetic mixtures and to purify the individual compounds and characterize them by determining some of their physical proper- ties. While working collaboratively with your group members you will become acquainted with: a) Volumetric glassware b) Liquid-liquid extraction apparatus c) Distillation apparatus OBJECTIVES After finishing these sessions and reporting your results to your mentor, you should be able to: • Prepare solutions of exact concentrations • Separate liquid-liquid mixtures • Purify compounds by recrystallization • Separate mixtures by simple and fractional distillation 2 EXPERIMENT 1 Glassware Calibration, Primary and Secondary Standards, and Manual Titrations PART 1. Volumetric Glassware Calibration Volumetric glassware is used to either contain or deliver liquids at a specified temperature. Glassware manufacturers indicate this by inscribing on the volumetric ware the initials TC (to contain) or TD (to deliver) along with the calibration temperature, which is usually 20°C1. Volumetric glassware must be scrupulously clean before use. The presence of streaks or droplets is an indication of the presence of a grease film. To eliminate grease from glassware, scrub with detergent solution, rinse with tap water, and finally rinse with a small portion of distilled water. Volumetric flasks (TC) A volumetric flask has a large round bottom with only one graduation mark positioned on the long narrow neck. Graduation Mark Stopper The position of the mark facilitates the accurate and precise reading of the meniscus. If the flask is used to prepare a solution starting with a solid compound, add small amounts of sol- vent until the entire solid dissolves.
    [Show full text]
  • SC-300 Pro Kit Manual 1 Version 2.3D Materials Provided in the Kit
    Vinmetrica SC-300 Pro Kit™ User Manual Vinmetrica SC-300 Pro Kit is a simple and robust device that provides high accuracy in determination of sulfite (SO2), pH and titratable acidity (TA) levels in wines, ciders, and other liquids. These are essential parameters to control in the effort to make high quality wines. The Pro kit includes lab accessories for the SC-300 Analyzer. Table of Contents: Materials Provided in the Kit............................................................................................................... 2 Things you will need............................................................................................................................ 2 Why Test for SO2, pH and TA?............................................................................................................ 3 Theory of Operation............................................................................................................................. 4 Setup.................................................................................................................................................... 5 Setting up the SC-300 for the first time................................................................................... 5 Assembling the Pro Kit Equipment......................................................................................... 6 Burette Maintenance................................................................................................................ 8 Burette Reading ......................................................................................................................
    [Show full text]
  • Laboratory Equipment Reference Sheet
    Laboratory Equipment Stirring Rod: Reference Sheet: Iron Ring: Description: Glass rod. Uses: To stir combinations; To use in pouring liquids. Evaporating Dish: Description: Iron ring with a screw fastener; Several Sizes Uses: To fasten to the ring stand as a support for an apparatus Description: Porcelain dish. Buret Clamp/Test Tube Clamp: Uses: As a container for small amounts of liquids being evaporated. Glass Plate: Description: Metal clamp with a screw fastener, swivel and lock nut, adjusting screw, and a curved clamp. Uses: To hold an apparatus; May be fastened to a ring stand. Mortar and Pestle: Description: Thick glass. Uses: Many uses; Should not be heated Description: Heavy porcelain dish with a grinder. Watch Glass: Uses: To grind chemicals to a powder. Spatula: Description: Curved glass. Uses: May be used as a beaker cover; May be used in evaporating very small amounts of Description: Made of metal or porcelain. liquid. Uses: To transfer solid chemicals in weighing. Funnel: Triangular File: Description: Metal file with three cutting edges. Uses: To scratch glass or file. Rubber Connector: Description: Glass or plastic. Uses: To hold filter paper; May be used in pouring Description: Short length of tubing. Medicine Dropper: Uses: To connect parts of an apparatus. Pinch Clamp: Description: Glass tip with a rubber bulb. Uses: To transfer small amounts of liquid. Forceps: Description: Metal clamp with finger grips. Uses: To clamp a rubber connector. Test Tube Rack: Description: Metal Uses: To pick up or hold small objects. Beaker: Description: Rack; May be wood, metal, or plastic. Uses: To hold test tubes in an upright position.
    [Show full text]
  • 2019 Beverage Industry Supplies Catalog Table of Contents
    2019 Beverage Industry Supplies Catalog Table of Contents Barrels, Racks & Wood Products……………………………………………………………...4 Chemicals Cleaners and Sanitizers…………………………………………………………..10 Processing Chemicals……………………………………………………………..13 Clamps, Fittings & Valves……………………………………………………………………….14 Fermentation Bins…………………………………………………………………………………18 Filtration Equipment and Supplies……...…………………………………………………..19 Fining Agents………………………………………………………………………………………..22 Hoses…………………………………………………………………………………………………..23 Laboratory Assemblies & Kits…………………………………………………………………..25 Chemicals……………………………………………………………………………..28 Supplies………………………………………………………………………………..29 Testers………………………………………………………………………………… 37 Malo-Lactic Bacteria & Nutrients…………………………………………………………….43 Munton’s Malts……………………………………………………………………………………..44 Packaging Products Bottles, Bottle Wax, Capsules………………………………………………….45 Natural Corks………………………………………………………………………..46 Synthetic Corks……………………………………………………………………..47 Packaging Equipment…………………………………………………………………………….48 Pumps………………………………………………………………………………………………….50 Sulfiting Agents…………………………………………………………………………………….51 Supplies……………………………………………………………………………………………….52 Tanks…………………………………………………………………………………………………..57 Tank Accessories…………………………………………………………………………………..58 Tannins………………………………………………………………………………………………..59 Yeast, Nutrient & Enzymes……………………………………………………………………..61 Barrels, Racks & Wood Products Barrels Description Size Price LeRoi, New French Oak 59 gl Call for Pricing Charlois, New American Oak 59 gl Call for Pricing Charlois, New Hungarian Oak 59 gl Call for Pricing Used
    [Show full text]
  • Kjeldahl Distillation Unit
    Terms of Business v There are frequent fluctuations in the cost of input. So we may not be able to give prior intimation regarding changes in the price structure. v Packing, Forwarding, Freight and Insurance will be Charged Extra. v Sales Tax and Excise Duty will be extra as per Central or State Government Rules. v Every possible care is taken in packing, but it is difficult to undertake responsibility of loss, breakage or damage during transit. v R/R and our bill be sent though V. P. P. or any scheduled bank. New customers are requested to advance 25% of the estimated value. v While placing the order, please give clear despatch instructions indicating C. S. T. Number, Name of Railway Station, Your Banker and Our Catalogue Number. v All problems shall be solved amicably subject to Ambala Jurisdiction. GUPTA SCIENTIFIC INDUSTRIES Ambala Cantt. THIS CANCELS OUR ALL PREVIOUS PRICE LISTS PPPrice List 2017-18 CATALOGUE CONTENTS Product Range Pages Interchangeable Standard Joints, Adapters, Stirrers, Condensers, 1 to 49 Laboratory Flasks, Columns, Separating Funnels, Assemblies, Glasswares Water Distillation, Essential Oil, Soxhlet Apparatus. Volumetric Burettes, Pipettes, Micro Pipettes, Measuring Cylinders, 50 to 74 Glasswares Measuring Flasks, Culture Tubes, Centrifuge Tube & Test Tubes. Sintered Sintered Crucibles, Funnels, Chromatography Columns and 75 to 84 Glasswares Filter Assembly. Gas Estimation Impinger, Gas Burettes, Tubes, Gas Wash Bottles, 85 to 90 Apparatus Oxygen Purity and Orsat Apparatus. Special Semi Micro Ware, Clinical Laboratory Apparatus, 91 to 97 Glasswares Electrodes and Milk Testing Apparatus. Supplementary Stopcocks, Rotaflow Screw Type Stopcocks, Teflon Key 98 to 123 Glasswares Stopcocks, Manometers, Weighing Bottles, S.
    [Show full text]
  • 2020 NGSS High School Chemistry Supply List
    Recommended Minimum Core Inventory for NGSS High School Chemistry, Class of 32 Students Qty. Per Catalog Equipment / Supplies FREY Catalog # Total Classroom Unit $ SAFETY EQUIPMENT 1 Acid Corrosive Storage Cabinet 528445 $602.09 $602.09 1 Corrosive Storage Cabinet 528446 $1,009.95 $1,009.95 1 Chemical Spill Kit 1491078 $146.29 $146.29 Chemical Storage Reference - Ask your Frey 1 Chemical Storage Reference Scientific Representative how to safely store your chemicals with our Color Code System. 1 Emergency Shower and Eyewash 572443 $3,135.95 $2,983.95 1 Gravit-Eye Portable Eye Wash Station, 16 gallon 1320143 $333.39 $333.39 1 Fire Blanket w/ Hanging Pouch, 6' L x 5' W 1488340 $149.99 $149.99 1 Dry Chemical Fire Extinguisher 1471240 $153.79 $153.79 1 First Aid Station for 25 people 1451983 $70.09 $70.09 1 Flammables Storage Cabinet, 23-1/4" x 35" x 12 gallon, yellow 601016 $960.95 $960.95 1 Fume Hood Labconco Basic 47 526701 $10,081.49 $10,081.49 32 Indirect Vent Safety Goggles 577927 $3.89 $124.48 1 Goggle Sanitizer Cabinet 1574050 $911.99 $911.99 32 Rubberized Aprons, 27" x 42" 589239 $8.39 $268.48 EQUIPMENT / SUPPLIES 1 Balance, Ohaus Pioneer Precision, 0.001 mg, 160g capacity 2001994 $1,254.69 $1,254.69 5 Balance, Ohaus Navigator Electronic , .01g, 510g capacity 2012765 $328.79 $1,643.95 3 Beakers, 50 mL, Pyrex Vista Low Form Borosilicate, pk/12 529623 $35.09 $105.27 3 Beakers, 100 mL, Pyrex Vista Low Form Borosilicate, pk/12 529624 $35.09 $105.27 2 Beakers, 250 ml, Pyrex Vista Low Form Borosilicate pk/12 529626 $37.39 $74.78 2 Beakers,
    [Show full text]
  • Laboratory Supplies and Equipment
    Laboratory Supplies and Equipment Beakers: 9 - 12 • Beakers with Handles • Printed Square Ratio Beakers • Griffin Style Molded Beakers • Tapered PP, PMP & PTFE Beakers • Heatable PTFE Beakers Bottles: 17 - 32 • Plastic Laboratory Bottles • Rectangular & Square Bottles Heatable PTFE Beakers Page 12 • Tamper Evident Plastic Bottles • Concertina Collapsible Bottle • Plastic Dispensing Bottles NEW Straight-Side Containers • Plastic Wash Bottles PETE with White PP Closures • PTFE Bottle Pourers Page 39 Containers: 38 - 42 • Screw Cap Plastic Jars & Containers • Snap Cap Plastic Jars & Containers • Hinged Lid Plastic Containers • Dispensing Plastic Containers • Graduated Plastic Containers • Disposable Plastic Containers Cylinders: 45 - 48 • Clear Plastic Cylinder, PMP • Translucent Plastic Cylinder, PP • Short Form Plastic Cylinder, PP • Four Liter Plastic Cylinder, PP NEW Polycarbonate Graduated Bottles with PP Closures Page 21 • Certified Plastic Cylinder, PMP • Hydrometer Jar, PP • Conical Shape Plastic Cylinder, PP Disposal Boxes: 54 - 55 • Bio-bin Waste Disposal Containers • Glass Disposal Boxes • Burn-upTM Bins • Plastic Recycling Boxes • Non-Hazardous Disposal Boxes Printed Cylinders Page 47 Drying Racks: 55 - 56 • Kartell Plastic Drying Rack, High Impact PS • Dynalon Mega-Peg Plastic Drying Rack • Azlon Epoxy Coated Drying Rack • Plastic Draining Baskets • Custom Size Drying Racks Available Burn-upTM Bins Page 54 Dynalon® Labware Table of Contents and Introduction ® Dynalon Labware, a leading wholesaler of plastic lab supplies throughout
    [Show full text]
  • Bel-Art Clamps and Holders Catalog.Pdf
    clamps and holders C a b Tubing Clamps a. screw Clamp Precise Control Offers on/off and fine control so accurate that it replaces stopcocks in many applications. Can be installed without disconnecting tubing or interrupting operation. Molded of Delrin® plastic, the clamp is autoclavable and resistant to acids, alkalis and organic solvents. Accepts flexible 1 tubing up to 14mm ( ⁄2") O.D. 3 per bag. CaTalog no. fiTs Tubing up To: 1 F18212-0000 14mm ( ⁄2") O.D. b. spring Tubing Clamps Squeeze Control Perfect for all flexible tubing, this positive-action, self-closing clamp opens by squeezing the handles together. Made of chemical and stain-resistant Delrin® plastic and stainless steel. 3 per bag. CaTalog no. fiTs Tubing up To: 5 H18213-0000 8mm ( ⁄16") O.D. 15 H18214-0000 12mm ( ⁄32") O.D. C. Tubing Clamp Serrated Jaws 1 Strong acetal plastic clamp provides secure closure on tubing with a wall of 0.82mm ( ⁄32") or thinner. Slides over tubing at any point for easy installation and may be left open for convenient storage without constricting flow. It locks when closed and springs open when the 1 5 locking tab is released. Jaws are 2.7cm (1 ⁄16") long; total length is 5.9cm (2 ⁄16") long. 12 per bag, 6 bags per case. CaTalog no. fiTs Tubing up To: 1 F18218-0000 0.82mm ( ⁄32") Wall Thickness Use a Scienceware® Tubing Sizer to Select the Right Size Tubing, Page 154 56 www.novatech-usa.com (866) 433-6682 clamps and holders D E D. swing Jaw™ Tubing Clamps For All Flexible Tubing Zinc-plated steel clamp provides a non-slip closure for all flexible tubing – even heavy-walled vacuum lines.
    [Show full text]
  • Standard Methods for the Examination of Water and Wastewater
    Standard Methods for the Examination of Water and Wastewater Part 1000 INTRODUCTION 1010 INTRODUCTION 1010 A. Scope and Application of Methods The procedures described in these standards are intended for the examination of waters of a wide range of quality, including water suitable for domestic or industrial supplies, surface water, ground water, cooling or circulating water, boiler water, boiler feed water, treated and untreated municipal or industrial wastewater, and saline water. The unity of the fields of water supply, receiving water quality, and wastewater treatment and disposal is recognized by presenting methods of analysis for each constituent in a single section for all types of waters. An effort has been made to present methods that apply generally. Where alternative methods are necessary for samples of different composition, the basis for selecting the most appropriate method is presented as clearly as possible. However, samples with extreme concentrations or otherwise unusual compositions or characteristics may present difficulties that preclude the direct use of these methods. Hence, some modification of a procedure may be necessary in specific instances. Whenever a procedure is modified, the analyst should state plainly the nature of modification in the report of results. Certain procedures are intended for use with sludges and sediments. Here again, the effort has been to present methods of the widest possible application, but when chemical sludges or slurries or other samples of highly unusual composition are encountered, the methods of this manual may require modification or may be inappropriate. Most of the methods included here have been endorsed by regulatory agencies. Procedural modification without formal approval may be unacceptable to a regulatory body.
    [Show full text]
  • High School Chemistry
    RECOMMENDED MINIMUM CORE INVENTORY TO SUPPORT STANDARDS-BASED INSTRUCTION HIGH SCHOOL GRADES SCIENCES High School Chemistry Quantity per Quantity per lab classroom/ Description group adjacent work area SAFETY EQUIPMENT 2 Acid storage cabinet (one reserved exclusively for nitric acid) 1 Chemical spill kit 1 Chemical storage reference book 5 Chemical waste containers (Categories: corrosives, flammables, oxidizers, air/water reactive, toxic) 1 Emergency shower 1 Eye wash station 1 Fire blanket 1 Fire extinguisher 1 First aid kit 1 Flammables cabinet 1 Fume hood 1/student Goggles 1 Goggles sanitizer (holds 36 pairs of goggles) 1/student Lab aprons COMPUTER ASSISTED LEARNING 1 Television or digital projector 1 VGA Adapters for various digital devices EQUIPMENT/SUPPLIES 1 box Aluminum foil 100 Assorted rubber stoppers 1 Balance, analytical (0.001g precision) 5 Balance, electronic or manual (0.01g precision) 1 pkg of 50 Balloons, latex 4 Beakers, 50 mL 4 Beakers, 100 mL 2 Beakers, 250 mL Developed by California Science Teachers Association to support the implementation of the California Next Generation Science Standards. Approved by the CSTA Board of Directors November 17, 2015. Quantity per Quantity per lab classroom/ Description group adjacent work area 2 Beakers, 400 or 600 mL 1 Beakers, 1000 mL 1 Beaker tongs 1 Bell jar 4 Bottle, carboy round, LDPE 10 L 4 Bottle, carboy round, LDPE 4 L 10 Bottle, narrow mouth, 1000 mL 20 Bottle, narrow mouth, 125 mL 20 Bottle, narrow mouth, 250 mL 20 Bottle, narrow mouth, 500 mL 10 Bottle, wide mouth, 125
    [Show full text]
  • Laboratory Equipment Used in Filtration
    KNOW YOUR LAB EQUIPMENTS Test tube A test tube, also known as a sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top and closed at the bottom. Beakers Beakers are used as containers. They are available in a variety of sizes. Although they often possess volume markings, these are only rough estimates of the liquid volume. The markings are not necessarily accurate. Erlenmeyer flask Erlenmeyer flasks are often used as reaction vessels, particularly in titrations. As with beakers, the volume markings should not be considered accurate. Volumetric flask Volumetric flasks are used to measure and store solutions with a high degree of accuracy. These flasks generally possess a marking near the top that indicates the level at which the volume of the liquid is equal to the volume written on the outside of the flask. These devices are often used when solutions containing dissolved solids of known concentration are needed. Graduated cylinder Graduated cylinders are used to transfer liquids with a moderate degree of accuracy. Pipette Pipettes are used for transferring liquids with a fixed volume and quantity of liquid must be known to a high degree of accuracy. Graduated pipette These Pipettes are calibrated in the factory to release the desired quantity of liquid. Disposable pipette Disposable transfer. These Pipettes are made of plastic and are useful for transferring liquids dropwise. Burette Burettes are devices used typically in analytical, quantitative chemistry applications for measuring liquid solution. Differing from a pipette since the sample quantity delivered is changeable, graduated Burettes are used heavily in titration experiments.
    [Show full text]
  • Product Catalogue
    Lab Equipment 8/6/06 16:22 Page 1 LABORATORY EQUIPMENT © 2003 S Murray & Co Ltd Holborn House Old Woking Laboratory Equipment: Catalogue Surrey GU22 9LB England Registered in England No 145824 This catalogue is copyright and no Telephone +44 (0)1483 740099 part of it may be reproduced Authorised Share Capital Fax +44 (0)1483 755111 without our express written consent. £1,000,000 e-mail [email protected] Produced by Knowles Thompson. Printed in the UK. www.smurray.co.uk Lab Equipment 8/6/06 16:22 Page 2 SMURRAY&CO AHISTORY OF G ROWTH &DEVELOPMENT Head office and glassworks, Woking Blow-moulding and printworks, Woking S Murray was founded in 1915, initially as a Woking, and the manufacture of surgical distributor of medical glassware. instruments in Sheffield. The company rapidly developed to become Represented by more than 300 wholesalers a leading British manufacturer of laboratory and distributors worldwide, the SAMCO consumables and has since diversified into trademark is known internationally for blow-moulding and silk-screen printing at quality, service and competitive pricing. 2 Lab Equipment 8/6/06 16:22 Page 3 SMURRAY&CO AFIRM F OUNDATION FOR THE F UTURE Sheffield factory Notable Milestones Laboratory Equipment Owner managed for four generations, S Murray Manufacture of test tubes was relocated from & Co has a history of growth and development London to Woking in 1941. The company with a number of notable milestones:- commenced distribution of Trident Vials in 1964 and acquired laboratory scaffolding Plastic Containers manufacturer Climpex Ltd in 1998. Beginning with the distributorship of Fibrenyle Surgical Instruments products in 1963, the company commenced The acquisition of Sheffield-based surgical in-house manufacture in 1984, then acquired and dissecting instrument manufacturers blow-moulding and silk-screen specialists George Gill & Sons took place in 1948, Miller Mouldings Ltd in 1989.
    [Show full text]